F_Usb1: Usb0/Usb1 Connector; Jp1, Jp2, Jp3: Rs232/422/485 (Com2) Selection - IBASE Technology MI910 User Manual

F_USB1: USB0/USB1 Connector

JP1, JP2, JP3: RS232/422/485 (COM2) Selection

COM1 is fixed for RS-232 use only.
COM2 is selectable for RS232, RS-422 and RS-485.
The following table describes the jumper settings for COM2 selection.
Function
(pin closed)
COM2 is jumper selectable for RS-232, RS-422 and RS-485.
Pin #
10
Signal Name
Vcc
D0-
D0+
Ground
NC
COM2
RS-232
JP3:
Jumper
Setting JP2:
3-5 & 4-6
JP1:
3-5 & 4-6
RS-232
1 DCD
2 RX
3 TX
4 DTR
5 Ground
6 DSR
7 RTS
8 CTS
9 RI
NC
MI910 User's Manual
Pin Pin
1 2
3 4
5 6
7 8
9 10
RS-422
JP3:
1-2 3-4
JP2:
1-3 & 2-4
JP1:
1-3 & 2-4
Signal Name
R2-422 RS-485
TX- DATA-
TX+ DATA+
RX+
RX-
Ground Ground
RTS-
RTS+
CTS+
CTS-
NC
INSTALLATIONS
Signal Name
Vcc
D1-
D1+
Ground
Ground
RS-485
JP3:
5-6
JP2:
1-3 & 2-4
JP1:
1-3 & 2-4
NC
NC
NC
NC
NC
NC
NC
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